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    <head>
      <base href="https://bugs.webkit.org/" />
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - WebCore.build linker failed because of duplicate symbols for architecture x86_64"
   href="https://bugs.webkit.org/show_bug.cgi?id=151859">151859</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>WebCore.build linker failed because of duplicate symbols for architecture x86_64
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>Safari 9
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>iOS
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Mac OS X 10.11
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Major
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>WebCore Misc.
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>qingye_love&#64;qq.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>This is my first try to build for iOS, before I build a OS X version that's ok(but run-safari that will warning Error Domain=com.apple.account Code=9).

Environment: OS X 10.11.1
Target iOS SDK ver: 9.1
command for build at the root of webkit trunk: ./Tools/Scripts/build-webkit --debug --ios-simulator

Then failed at the linker step(see below):
================================================================================================================

Ld /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/Debug-iphonesimulator/WebCore.framework/WebCore normal x86_64
    cd /Users/chris/Desktop/Projects/OpenSource/Webkit/Source/WebCore
    export IPHONEOS_DEPLOYMENT_TARGET=9.1
    export PATH=&quot;/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin&quot;
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -arch x86_64 -dynamiclib -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator9.1.sdk -L/Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/Debug-iphonesimulator -F/Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/Debug-iphonesimulator -F/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator9.1.sdk/System/Library/PrivateFrameworks -filelist /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/WebCore.LinkFileList -Xlinker --no-demangle -unexported_symbols_list Configurations/WebCore.unexp -install_name /System/Library/PrivateFrameworks/WebCore.framework/WebCore -mios-simulator-version-min=9.1 -Xlinker -objc_abi_version -Xlinker 2 -lsqlite3 -lobjc -lANGLE -framework CFNetwork
duplicate symbol _kMGQAppleInternalInstallCapability in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/MediaQueryEvaluator.o
duplicate symbol _kMGQiPadCapability in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/MediaQueryEvaluator.o
duplicate symbol _kMGQDeviceClassNumber in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/MediaQueryEvaluator.o
duplicate symbol _kMGQMainScreenPitch in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/MediaQueryEvaluator.o
duplicate symbol _kMGQDeviceName in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/MediaQueryEvaluator.o
duplicate symbol _kMGQMainScreenScale in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/MediaQueryEvaluator.o
duplicate symbol _kMGQAppleInternalInstallCapability in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/NavigatorBase.o
duplicate symbol _kMGQiPadCapability in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/NavigatorBase.o
duplicate symbol _kMGQDeviceClassNumber in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/NavigatorBase.o
duplicate symbol _kMGQMainScreenPitch in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/NavigatorBase.o
duplicate symbol _kMGQDeviceName in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/NavigatorBase.o
duplicate symbol _kMGQMainScreenScale in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/NavigatorBase.o
duplicate symbol _kMGQAppleInternalInstallCapability in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/PlatformScreenIOS.o
duplicate symbol _kMGQiPadCapability in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/PlatformScreenIOS.o
duplicate symbol _kMGQDeviceClassNumber in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/PlatformScreenIOS.o
duplicate symbol _kMGQMainScreenPitch in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/PlatformScreenIOS.o
duplicate symbol _kMGQDeviceName in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/PlatformScreenIOS.o
duplicate symbol _kMGQMainScreenScale in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/PlatformScreenIOS.o
duplicate symbol _kMGQAppleInternalInstallCapability in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/SettingsCocoa.o
duplicate symbol _kMGQiPadCapability in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/SettingsCocoa.o
duplicate symbol _kMGQDeviceClassNumber in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/SettingsCocoa.o
duplicate symbol _kMGQMainScreenPitch in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/SettingsCocoa.o
duplicate symbol _kMGQDeviceName in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/SettingsCocoa.o
duplicate symbol _kMGQMainScreenScale in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/SettingsCocoa.o
duplicate symbol _kMGQAppleInternalInstallCapability in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/UserAgentIOS.o
duplicate symbol _kMGQiPadCapability in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/UserAgentIOS.o
duplicate symbol _kMGQDeviceClassNumber in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/UserAgentIOS.o
duplicate symbol _kMGQMainScreenPitch in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/UserAgentIOS.o
duplicate symbol _kMGQDeviceName in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/UserAgentIOS.o
duplicate symbol _kMGQMainScreenScale in:
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/Device.o
    /Users/chris/Desktop/Projects/OpenSource/Webkit/WebKitBuild/WebCore.build/Debug-iphonesimulator/WebCore.build/Objects-normal/x86_64/UserAgentIOS.o
ld: 30 duplicate symbols for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

** BUILD FAILED **</pre>
        </div>
      </p>
      <hr>
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      <ul>
          <li>You are the assignee for the bug.</li>
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